Friction reducing device



Nov. 8, 1949 P. ZALKIND FRICTION REDUCING DEVICE i. .r I

5 Sheets-Sheet 1 Original Filed Oct. 31, 1941 Nov. 8, 1949 P. ZALKINDFRICTION REDUCING DEVICE 5 Sheets-Sheet 2 Original Filed Oct. 31, 1941FIG/1.

INVENTOR.

BY W

- T TORNE Y.

Nov. 8,1949 P. ZALKIND FRICTION REDUCING DEVICE Original Filed Oct. 51,1941 3 Sheets-Sheet 3 INVENT'OR.

TORNE).

FRICTIQN nnnuoiiid Davies fisiiise i mo,530,465 a, I H

(cigar-77 2 Claims.

"This application is a' division of my application Serial Nof 417,216;filed October 31, 1941, now abandoned, and relates to friction-reducingdrawer guide and alignment means in collapsible containers of the drawerand easing type in which a 'amwer is slidable in the open mouth of thecasing.

He retofore in the construction and manufactdfe or collapsible drawerand easing combinaeons, particularly collapsible" drawers and casof afibrous material, one of the mostdifficult elements has beenthe'arrangement of the members'so that the elementsiof each could becollapsed for" storage or shipping purposes, while at the'sametime'these elements might readily be erected by the unskilled user andarranged for cooperation with each other.

One of the most important accomplishments which have' -brought intoextensive commercial use collapsible containers troduction ofreinforcing df'thca'sing so'arranged that-Fwhen the casing waserectedmnenovel means provided for trans mittingloads from the top to the'bottomofa case ing thus prevented distortion ofthe casing itself, superposedings particularly when carrying aload of casing in a stack. 3

-"s uch afneans are zgiisbnan iothers of 'niy patents,

A type of drawer which may cooperate with this {1,946,516.

type of casing is shown in my Patent No.

"Suspension and anti-friction means have also been developed and are inuse in connection with drawers and casings of the collapsible varietyfor thepurpose of facilitating the movement 'oithe drawer withinpension" or friction reducing means are shown inmy'Pate'ntsNos;2,233,906 and'2,200,3'19.

addition, strengthening members for "the rear endof the casing, in orderto'insure trans-' mission of compressive loads as well'as' the closureof-tl'ie'rear of the casing, Such'f elements are shown in my 'Patent'No. 2,159,070.

1 Other types of drawer'suspension and alignment means as well. asdrawer stop means have also been devised make drawers andcasings of thistype commercially successful. Such types of suspensions are shown in myPatents 2,319,283and 21537379.

'In the'present invention 1 have disclosed an improved'd'rawer andcasing construction which facilitates the'operation oi the drawerin-th'e casing.

of this'type was'the in members for the ends the casing. Such types ofs'us-' have beende'visedi and have served further to Originalapplication Qctober fil, 1941, Serial No. Divided and this; applicationApril 11,

An object of 'the present invention, therefore,

shown in my Patent No.

is thevprovision .of Isuchmeans associated with drawer and'icasin'gcombinations which facilitate the alignment of the means, nevertheless,

permits the collapse and erection of the casing by anunskilled user.

1 Elements projecting upwardly from .thessides' arranged to cooperatewith the casing and of the drawer are alignment elements of the top ofthe thus furnish auxiliary alignment.

A further object of the invention is to provide drawer. v

These and many other objects of the present invention will in part beapparent and; where -not apparentpointed out in the followingdescriptionandfdrawi'ngs, in which:

Figure 1 is -a view in perspective, partially broken away, showing acombination collapsible drawer and casing; using the friction reducing"and alignment means of the present invention? l Figure 2 is an enlargeddetail'view of the upper right hand frontcorner of the casing member ofFigure'li *Fig'ure' 3 is-a cross-sectional view, taken along lines 3- 3of Figure 2, looking in'the direction of the arrows: 5 :"Figure 4 is anenlarged view of the rear left hand corner of the drawer, showingtheupper alignment means thereon.

Figure 5 is a top View in perspective ofthe' drawer member collapsed forstorage or shipment. Figure 6 is a bottom view in perspective showingthe drawer member collapsed and ready for shipment.

Referring now to Fig. 1, I have here shown a casing member 2!] havingthe construction shown in'my Patent Ne'azsaso's, and which may have. theconstruction; shown in my Patents Nos 2,118,'( l1'1 or 21188315.: Ifhecasing has a top wall 2 1', botto'm*wal1 22, and side walls lza'aiiaza.Each offthefwajlls'l is.hin'gedly connected along the lateral edges25,."2 5" to" adjacent wane, and the wallsrnay be folded around thehinge connecme ses in orderto collapsethe casing] fIfhe-hinge lines Z5vmay be formed by suitable bend lines or scores in the material or maybe, madein any other suitable manner.

q'l'hefopen front 21 ofthe Icasing may be reinforced inithe manner shownin my Patents Nos. 2,118,0111and.2,233,906. Thereinforcementsmaycomprise horizontalmetallic channel members 28 whicll' are securelyfastened in any suitable drawer in the casing, being. associatedwith thetop wall of the casing, which manner over the front edges of the top andbottom walls 2| and 22.

The drawer 40 may have a construction similar to that shown in myPatents Nos. 1,946,516, 2,128,342, 2,152,676, or 2,200,319 and may havea back wall 4| and a metal faced front wall 42. The front wall 42 may beprovided with a recess 43 for the mounting of a card, and may also beprovided with a handle member 44 which facilitates removal of the drawerfrom the casing.

The handle member, it will be noted, is recessed into the front of thedrawer in order that it will not project when the drawer is collapsedand therefore so that it will not interfere with the flat collapse ofthe drawer.

It will be noted, from an inspection of Figures 1 and 6, that tongues 45and 46 are hingedly connected by appropriate fold lines adjacent to thevertical edges of the front 42 and that these tongues 45 and. 46 may beswung normal to the said front and extend parallel to the lateral edgesof the bottom wall 47. This is likewise the case with the tongues 48 and49 which extend from the rear wall 4| of the drawer. The generalstructure is such as shown in my Patent Number 1,946,516.

The alignment and drawer stop means which may be utilized at the top ofthe drawer comprises a glider 200 which is pivotally mounted at I on thechannel-shaped post 202. The channelshaped post 202 slips over theforward edge of the rear tongues48 and 49 and may be secured theretoadhesively or by rivets or by prongs or by a bent-over lip or in anyother suitable manner.

One of the legs of the channel-shaped member 202 is vertically extendedat 203 to provide a suitable support for the pin 20I, free of the upperedge 204 of the tongue 48. As may be obvious from a comparison ofFigures 1 and 4 with Figures 5 and 6, the mounting of the glider 200 onthe post 202 to the tongue 48 does not in any way interfere with thecollapsibility of the drawer member 40.

In addition and in order to rigidify the rear end of the drawer so thata perfect alignment may be obtained by a proper positioning of theglider 200, I have provided an angle wire 2l0 having a pair of extendinglegs 2 and 2 at opposite ends thereof and the continuous connectingportion 212. The connecting portion 2l2 is secured by the channel-shapedreinforcing member 213 to the upper edge of the rear wall 4| of thedrawer in such a manner that the connecting portion H2 is freelyrotatable within the reinforcement 2|3 while, however, it is capturedand securely held against the upper edge of the rear wall 4 I.

Normally and during collapse for shipment or storage the angle wire isrotated so that the legs 1 thereof are out of engagement with the Whenthe drawer has manner heretofore described, the angle wires may berotated from the position shown by the dotted line 2| I to the posilinesof Figure 4 where The legs 2| I of the angle wire, by reason of the factthat they are rigidly interconnected by the continuous portion 2|2 ofthe angle wire, serve therefore properly to space the tongues 48 and 49of the rear end of the drawer so that the glide members will beperfectly spaced with respect to and the securement of the post 202'each other in order to cooperate in the aligning of the drawer and tooperate properly as a drawer stop.

The glider 200 is preferably integrally stamped from a single sheet ofmaterial and comprises a main body portion 220 and an upper flange 22lpreferably integrally connected to and bent from the main body portion200.

The upper flange 221 has a forward projection or hook 222 and a forwardabutment 223 is secured to the main body portion 220 of the glide. Alsoa forwardly projecting finger 224 is integrally connected to the mainbody portion 220 of the glide200.

The upper surface which the drawer of the container within is to bemounted is provided a with a rail 230 having flanges 23| and 232 (seeFigures 2 and 3), risers 234 and 235 and a conn'ecting portion 236. Therails are secured to the upper wall of the casing in any suitablemanner, as for instance, by the integrally formed prongs 240 mounted onthe flanges thereof which may be folded over within the upper wall ofthe casing, which prongs may have the form shown in my Patent No.2,142,167.

Generally the upper rail 230 of the casing may have substantially thesame form as the lower the forward end casing are differently formed inorder to cooperate with hook 222, abutment 223 and finger 224 of theglide previously described.

The forward end of the flange 232 of each of i the rails is providedwith a downwardly extending depression 250 terminating in a rearwardlyfacing opening 25!, the edge of which, 252, provides an abutment againstwhich the member 223 of the glide may stop.

The glide member, it will be noted, is so mounted on its pin 21' thatthe greater weight is at the rear of the glide, thus tending to rotatethe glide to the position shown in Figure 4. drawer tion of the drawerwithin the casing.

The angle formed between flange 22l of the glide member and body portion220 is so arranged that it will fit into the angle formed between theflange 232 and the riser 235 of the rail 230.

Since corresponding gliders on each side register with correspondingportions of the rail of easing against any wobbling thereof ormisalignment. In addition, as the drawer is pulled forward within thecasing, the hook 222 of the glider enters into the opening 25| while theabutment 223 comes to rest against the rear edge 252 of the opening 25!Since this action occurs on both sides of the drawer, this operatesperfectly as a drawer stop member to prevent unintended removal of thedrawer.

in the event that it should be desired, however, to completely removethe drawer from the casing, then as the drawer is moved forward andbefore the hook 222 of each of the gliders enters into the openings 25|of each of the rails in the manner hereindescribed, the user of thedrawer may depress the fingers 224, 224 of each of the gliders thuspreventing the hook 222 from entering into the opening 25I and thuspermitting the drawer to be completely withdrawn.

Since the glider is so arranged that the major portion of its weight isrearwardly of the pin 20! then nothing need be done with respect to theglider when the drawer is inserted into the casing since the drawer willenter quite readily, the glider being in the position shown in Figure 4when the drawer is completely withdrawn.

Many other embodiments and uses of my invention should now be obvious tothose skilled in the art. Accordingly, I prefer to be bound not by thespecific disclosures herein but only by the appended claims.

I claim:

1. In a device of the class described, a foldable drawer comprising aside wall and a rear wall formed as a fiat blank and adapted to have acommon edge forming a rear corner of said drawer when said drawer is inan erected position, and a stop means carried by said side wall adjacentsaid rear corner, including a securing means for securing said stopmeans to said side wall, and a rotatable angle wire having a legpermanently secured to said rear wall but rotative 6 with respectthereto, said securing means having a portion shaped to engage and gripthe other leg of said angle wire when said drawer is in set-up positionso as to render said rear corner substantially rigid.

2. In a device as set forth in claim 1, wherein said stop meanscomprises a member pivotally secured to said securing means and having aportion rearward of said pivot of greater weight than the portionforward thereof so as to bias said forward portion upwardly.

PHILIP ZALKIND.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

